Skip to content
ToolPika

Working Days Calculator

Count the working days between two dates, or find the date a number of working days from now. Set the days you work and add your holidays.

Working days between two dates

Add working days to a date

Working week and holidays

Days you work

Add public holidays or company closures. They are only subtracted when they fall on a day you work.

Runs in your browser. Nothing you enter is sent to a server.

How it works

Working days between two dates. The calculator counts every day in the range that falls on a day you work, then subtracts the holidays you added if they fall on one of those days. A holiday on a Saturday or Sunday changes nothing when you do not work weekends. Under the result you can see how the range splits into calendar days, weekend days and holidays.

Adding working days. Starting from the day after your date, the calculator steps forward one day at a time and counts only the days you work, skipping holidays, until it has counted the number you asked for. Subtracting does the same going backwards.

Dates are treated as calendar days, not times, so time zones and daylight-saving changes never add or lose a day.

Examples

All with a Monday to Friday week:

Question Answer
Working days in October 2026 22
Working days in December 2026 23, or 22 with 25 December as a holiday
Working days in 2026 261
Friday 9 October 2026 + 1 working day Monday 12 October 2026
13 October 2026 + 10 working days Tuesday 27 October 2026
1 June 2026 + 30 working days Monday 13 July 2026
18 December 2026 + 5 working days, with 25 December off Monday 28 December 2026

Common uses

  • Deadlines in working days. Contracts, deliveries and official replies are often due within “10 working days”: add them to the start date to get the real due date.
  • Leave requests. Count how many days of leave a holiday uses, with public holidays taken out.
  • Project planning. Turn an estimate of 30 working days into a calendar date.
  • Payroll and invoicing. Count the days worked in a month, then use the hours calculator for the time worked each day.

Frequently asked questions

Are the start and end dates both counted?

Yes, by default. Monday to Friday of the same week is 5 working days. Untick "Count the end date too" to measure a duration instead, where the end date is not worked, which gives 4.

Are public holidays subtracted automatically?

No. Public holidays differ by country, region and even city, and they change from year to year, so the calculator does not guess them. Add the ones that apply to you under "Holidays and other days off" and they are subtracted whenever they fall on a day you work.

How does adding working days work?

The count starts on the next working day, so the start date itself is not counted. Friday plus 1 working day is Monday, and Friday plus 5 working days is the following Friday. Weekend days and the holidays you added are skipped.

Can I count Saturdays, or a Sunday to Thursday week?

Yes. Under "Days you work", select any combination of days. A six-day week from Monday to Saturday gives 313 working days in 2026, compared with 261 for Monday to Friday.

How many working days are there in a year?

A Monday to Friday year has 260, 261 or 262 working days before holidays, depending on which weekdays the year starts and ends on. Both 2026 and 2027 have 261.

Related tools